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Tesla’s 4680 cell production process outlined in Giga Berlin’s revised filings

Credit: Tesla, Tobias Lindh/Twitter

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Tesla’s revised documents for Gigafactory Berlin have been posted online, and they are a treasure trove of information. The documents provided some new details about Tesla’s planned 4680 battery plant in Gigafactory Berlin, which Elon Musk noted is on track to be one of the world’s largest battery production facilities. They also outlined how Tesla’s 4680 cells are produced. 

While sections of the filing pertaining to the planned 4680 battery cell plant in Giga Berlin were blacked out due to sensitive information that could not be made public, the documents show some important tidbits about the upcoming facility. This includes the facility’s cell production operations over four floors, with anode and cathode production on the first floor and tabless cell production on the third floor. The battery plant is massive, requiring large foundations similar to Gigafactory Berlin’s Phase 1 zone. 

Most importantly, Tesla also submitted a simplified diagram of its 4680 battery cell production process, though most of the diagram was blacked out in the revised filing’s public release. However, the company provided a brief overview of how its new battery cell will be produced in the upcoming facility (roughly translated through Google Translate). 

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“The battery the Gigafactory Berlin requires special systems and process steps. The anodes and cathodes consist of coated current collector foils. Copper is used as the material for the anode foil and aluminum is used for the cathode foil. The anode and cathode components are manufactured in mixed processes (A020-01 and A020-02), which only use materials in powder form. The new materials used are tested and approved in our own laboratory (A020-11). 

“In order for the powder coating to adhere to the two films, they must first be pre-coated with a thin layer of adhesive (substrate) (A020-03 and A020-04). This substrate is delivered in containers. The pre-coating is necessary because a dry coating with powder takes place. After the anode and cathode components have been mixed, they are applied as a coating to the respective substrate-coated film in order to establish electrical contact (A020-05 and A020-06). The current collector foils, coated with the anode or cathode components, result in the finished anode or cathode. 

The revised filings also provided a general idea of how Tesla’s tabless cell production works. Among these is the fact that the finished 4680 cells would be subjected to 10 days’ worth of curing after their formation. 

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“The anode or cathode is then cut to the required lengths with a laser in the “tabless process” (A020-08). The anode, the cathode and the separator are alternately placed one on top of the other and rolled up into a roll. This roller is then inserted into a metal housing, which is manufactured from steel rollers in a die-cutting and deep-drawing process (A020-07). In the assembly area, the final assembly and filling of the cell takes place with small amounts of electrolyte (approx. 10% of the cell weight) (A020-09). 

“The electrolyte is absorbed by the electrode coatings and enables the lithium ions to move back and forth between the anode and cathode. The housing is then closed with a lid in a welding process. The last step is the formation (A020-10) of the cell. In the formation process, the cell is electrically started up by charging and discharging it under different temperature conditions. The finished cell remains in this area for approx. 10 days and is then put to further use. The cells produced are subjected to random quality control in our own laboratory (A020-11).” 

A link to Tesla’s filings for Gigafactory Berlin could be found here

Do you have anything to share with the Teslarati Team? We’d love to hear from you, email us at tips@teslarati.com.

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Simon is an experienced automotive reporter with a passion for electric cars and clean energy. Fascinated by the world envisioned by Elon Musk, he hopes to make it to Mars (at least as a tourist) someday. For stories or tips--or even to just say a simple hello--send a message to his email, simon@teslarati.com or his handle on X, @ResidentSponge.

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Tesla coding shows affordable model details, including potential price

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Credit: @tslaming | X

Coding within Tesla’s website appears to have potentially revealed some details of the affordable model it plans to launch, including its possible price.

Although these details are unconfirmed by the company, recent sightings of the vehicle have sparked significant speculation as to what it will offer.

Tesla said a few months back that it had already successfully built the first few test units of the affordable model. CEO Elon Musk revealed later that it would essentially be a stripped-down version of the Model Y with a handful of changes.

We had our first look at what those changes appear to be, as what is likely the new affordable model was spotted on roads near Gigafactory Texas yesterday. It is a Model Y body with some Model 3 features.

It lacks the light bar that the new Model Y has and instead equips headlights similar to those of the Model 3 “Highland.”

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Affordable Tesla Model Y spotted without camouflage near Giga Texas

Other design changes appear to include no glass roof and new wheels. Some rumors have also indicated that Tesla plans to use a cheaper, textile interior, devoid of the flashy features that its other cars are equipped with, including no rear screen, no HEPA system, and manually adjustable second-row air vents.

However, coding within the Tesla website seemed to reveal some pretty significant details about the new affordable model, including its name, which differs from the E41 codename it was given, its price, and a complete list of features.

This was found by Tesla Newswire on X. Here’s what the coding showed for the car. Note that this was found in coding, and is not necessarily confirmation from Tesla regarding what it plans to offer:

  • Name – Model Y Standard
  • Price $39,990
  • Redesigned front fascia
  • Single-part headlights
  • Front bumper camera
  • No glass roof, noted as a “closed glass roof”
  • 18″ Aperture wheels
  • Manually adjustable steering wheel
  • Textile décor
  • 15.4″ front touchscreen
  • No second-row touchscreen
  • Manually adjustable air vents in the second row
  • No HEPA system
  • 75 cu. fu. cargo space

Here’s what the coding looked like:

Many believe these could be the specs and details of the new affordable model, but others think Tesla might be baiting the community. Tesla knows its fans well, and many of them are sharp enough to examine some of the core portions of its website, looking for clues.

The company is well aware that these breadcrumbs will be discovered, and could be putting anything to drive up interest and chatter about what it could release. It certainly seems as if the price tag is a tad high, which tends to push some skepticism about the coding.

However, we’ll take anything we can get at this point. It is important to note that this coding is not a confirmation of details from Tesla.

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Affordable Tesla Model Y spotted without camouflage near Giga Texas

The vehicle had clean lines and it looked sleek, though it was also notably simpler than the standard Model Y.

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Credit: Ryan Mable/X

The tea leaves seem to be pointing towards the imminent release of the highly anticipated affordable Tesla Model Y. This was hinted at in recent observations from notable Tesla influencers on social media, as well as a sighting of the vehicle without any camouflage.

The affordable Tesla uncovered

Sightings of the affordable Model Y have been abounding as of late, though details of the vehicle were still hidden by coverings on the vehicle. In a recent post on X from Firefly engineer Ryan Mable, however, noted Tesla influencer Sawyer Merritt has reportedly “spotted an uncovered cheaper Model Y variant” driving near Giga Texas. 

Several images of the uncovered vehicle were shared online. Based on the photos that were shared by Mable, the affordable Model Y seemed to feature a fascia that’s inspired by the Model 3 sedan. Its roof also looked blacked out. Overall, the vehicle had clean lines and it looked sleek, though it was also notably simpler than the standard Model Y.

Tesla influencer mystery

Interestingly enough, several Tesla influencers apart from Merritt posted that they were in Giga Texas. These included drone operator Joe Tegtmeyer, teardown specialist Sandy Munro, and reviewers Kyle Conner and Kim Java. These influencers have not provided any context behind their Giga Texas trip, though the fact that they were gathered on the site brought speculations that Tesla might have invited the group for a teaser or a private unveiling event of sorts.

It remains to be seen when the affordable Model Y would be made available, though conversations now are centered on the vehicle’s potential price. Previous reports suggested that the car might be priced just below $40,000, which many believe would result in very low sales, though some have also speculated that the affordable Model Y could be priced below $35,000, which would likely make it a strong seller.

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Why Tesla’s Q4 performance could shock many after incredible Q3

There is still some residual impact to be felt as we enter Q4, and there is a potential shock coming to many investors as it could be stronger than what many think:

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Credit: Tesla

Tesla reported vehicle deliveries and energy deployments for the third quarter of 2025 today, blowing analyst estimations from Wall Street firms completely out of the water with its strongest three-month performance in company history.

The strong performance, which resulted in nearly half a million vehicle deliveries in the quarter, was largely driven by the momentum of the EV tax credit, which expired at the end of September, marking the end of the $7,500 discount that was previously available.

Tesla hits record vehicle deliveries and energy deployments in Q3 2025

This was a massive contributor to Tesla’s record-high in vehicle deliveries, as consumers rushed to take advantage of the credit.

There is still some residual impact to be felt as we enter Q4, and there is a potential shock coming to many investors as it could be stronger than what many think:

EV Tax Credit Deliveries Will Continue Through Q4

Despite the credit’s expiration, people will still be able to take advantage of it because the IRS changed the rules mid-quarter.

Prospective buyers can utilize the credit after September 30 if they place an order for an EV and make a marginal payment on the car.

Tesla’s $250 order deposit qualified as the marginal payment, so as long as the order was submitted before the end of the day on September 30, they could still take delivery in Q4 or even Q1 and still take advantage of the credit.

Tesla set to win big after IRS adjusts EV tax credit rules

With the Model Y Performance launching in the U.S. on September 30, that undoubtedly contributed to some orders. However, there are likely many people who ordered in the latter portion of Q3 and have not yet taken delivery. These will all contribute to Q4 delivery figures.

Seasonal Holiday Boost

Tesla traditionally has its strongest quarters in Q4, as the company typically introduces initiatives such as price cuts, incentives, and other offers to close out the year strong.

Car buyers are more likely to jump at these offers as well, as gifts for either themselves or others. What Tesla does in the final quarter of the year is usually boosted by whatever types of offers it can make.

Affordable Model Production Ramp

Tesla is likely preparing for the launch of its affordable model, which is essentially a stripped-down Model Y.

Some rumors have been circulating within the community, indicating that the company is nearing the sale of this vehicle, which is coded within Tesla’s website as the “Model Y Standard.”

If Tesla is able to lock in some good pricing on its affordable model, Tesla could see its quarterly figures return to QoQ growth, something that the company has not had in a few years.

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